diff --git a/funasr/auto/auto_model.py b/funasr/auto/auto_model.py
index a3202fdb4..9db8c015d 100644
--- a/funasr/auto/auto_model.py
+++ b/funasr/auto/auto_model.py
@@ -153,15 +153,18 @@ class AutoModel:
         
         # build tokenizer
         tokenizer = kwargs.get("tokenizer", None)
+        pdb.set_trace()
         if tokenizer is not None:
             tokenizer_class = tables.tokenizer_classes.get(tokenizer)
+            pdb.set_trace()
             tokenizer = tokenizer_class(**kwargs["tokenizer_conf"])
+            pdb.set_trace()
             kwargs["tokenizer"] = tokenizer
             kwargs["token_list"] = tokenizer.token_list
             vocab_size = len(tokenizer.token_list)
         else:
             vocab_size = -1
-        
+        pdb.set_trace()
         # build frontend
         frontend = kwargs.get("frontend", None)
         if frontend is not None: